Ok currently I have a carven progressive muffler and I love the sound and volume to me is perfect. However neighbors and the girlfriend are annoyed due to my random work schedule. Sometimes not home till 3 or 4Am and other times warming it up to leave at 5Am. So I need to quiet it down some. I was thinking about the magnaflow 24" because I dont want the stock one back on. I want noise but not overly loud, say like dead in between the carven and the stock. Want better flow then stock too. Nick recommends the mach 40 solo and I know he knows what hes talking about but I'm looking for opinions they just have to be the same direct fit type as the carven. Like solo vs magnaflow 18 24 flow master ect. Very interesting in hearing opinions!